[ARROW-14146] [Dev] Update merge script to specify python3 in shebang line

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: Developer Tools
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/29735
• Assignee: Ian Cook
• Reporter: Ian Cook
• Created: 27/Sep/21 14:26
• Updated: 11/Jan/23 08:37
• Resolved: 27/Sep/21 14:45

Description

Currently the script in dev/merge_arrow_pr.py requires modifying to run on any machines/environments where the shebang line #!/usr/bin/env python finds the system Python 2 instead of Python 3.

Updating the shebang line to read python3 instead of python would fix this.

thisisnic did the same for the linting and formatting scripts in ARROW-13759. Perhaps it is not as important to do this for the merge script because there is a wrapper script dev/merge_arrow_pr.sh that creates a virtual env and runs the Python script in it, but some Arrow devs (I for one) call the Python script directly.

Issue Links

• links to: GitHub Pull Request #11247